The Boston Herald reports Spacey wrote a letter saying that the threats from 55-year-old Linda Louise Culkin, of Quincy, caused "eminent fear," and asked that she remain in custody and "undertake intense psychiatric treatment."

Culkin was scheduled to be sentenced Tuesday in Boston, but a judge sent her for a psychiatric evaluation. She pleaded guilty in November to charges including mailing threatening communications, and sending threats and false information regarding explosives.